Rewrite story

Angus is walking in the Hong Kong Park at a Saturday morning. He see Mr Lourence is sitting on a chair. Angus sit near Mr Lourence and say "Hallo,Mr Lourence."
Mr Lourence is suprise to see Angus. "Hallo, Mr Chan." He say politely.
"How are you and your grandson?"
"Lourie? Oh! He is a good boy. Although he is sick in this few day, he stall study very hard."say Mr Lourence.
"I am glade about it," Angus say. Angus look at his watch. "I'm so sorry. I am going to go to a book fair. I need to go now. Bye."
"Bye!" Mr Lourence reply.